diff --git a/.github/workflows/gcc.yml b/.github/workflows/gcc.yml
index ac913f93a85..90592dc2020 100644
--- a/.github/workflows/gcc.yml
+++ b/.github/workflows/gcc.yml
@@ -48,7 +48,7 @@ jobs:
       - name: Build
         env:
           # TODO: -pedantic-errors here won't go through ./configure (with GNU C)
-          CFLAGS: "-std=${{ matrix.c }} -fPIC"
+          CFLAGS: "-std=${{ matrix.c }} -fPIC -Wall"
           # TODO: -pedantic-errors here won't compile
-          CXXFLAGS: "-std=${{ matrix.cpp }} -fPIC"
-        run: .github/workflows/build_ubuntu-20.04.sh $HOME/install -Werror
+          CXXFLAGS: "-std=${{ matrix.cpp }} -fPIC -Wall"
+        run: .github/workflows/build_ubuntu-20.04.sh $HOME/install